Which condition is often associated with long-term use of antipsychotic medications and includes involuntary lip movements?

Which condition is often associated with long-term use of antipsychotic medications and includes involuntary lip movements?

• A. Cerebral Palsy
• B. Parkinson's
• C. Tardive dyskinesia
• D. CHF

Answer: (C)

Long-term antipsychotic use can lead to tardive dyskinesia, a movement disorder caused by chronic dopamine D2 receptor blockade in the nigrostriatal pathway. It produces involuntary, repetitive movements, especially of the face and mouth—lip smacking, puckering, grimacing—sometimes spreading to the limbs. The lip movements described are a classic sign of orofacial dyskinesia. This condition is distinct from drug-induced parkinsonism, which features slowed movement, stiffness, and tremor, and from cerebral palsy or congestive heart failure, which aren’t caused by long-term antipsychotic exposure. Tardive dyskinesia can appear after months or years of treatment and may persist after stopping the medication, making early recognition and appropriate management important.

Long-term antipsychotic use can lead to tardive dyskinesia, a movement disorder caused by chronic dopamine D2 receptor blockade in the nigrostriatal pathway. It produces involuntary, repetitive movements, especially of the face and mouth—lip smacking, puckering, grimacing—sometimes spreading to the limbs. The lip movements described are a classic sign of orofacial dyskinesia. This condition is distinct from drug-induced parkinsonism, which features slowed movement, stiffness, and tremor, and from cerebral palsy or congestive heart failure, which aren’t caused by long-term antipsychotic exposure. Tardive dyskinesia can appear after months or years of treatment and may persist after stopping the medication, making early recognition and appropriate management important.